Find a builder to make your building structurally sound

RSJs support your new extension or other construction to ensure that your property is structurally sound. They are crucial parts of your building work that mustn't be ignored, and must be installed by a professional.  To see prices and availability for your job click green button.

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From £2,024

Last active Sep 26
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BUILDMARK BUILDERS

Relax... you have found a reliable extension builder in St Austell. BUILDMARK BUILDERS is a friendly and reliable company based in St Austell who c...

From £2,136

Last active Sep 26
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SANDSTONE BUILDERS T/A

SANDSTONE BUILDERS T/A is a trusted extension builder serving customers in St Austell and the surrounding area. Contact us to today to get a compet...

From £2,288

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DAVEY CONSTRUCTION LTD

Need an Extension Builder in St Austell? DAVEY CONSTRUCTION LTD has been helping local clients (20 mile radius) with their extension buildering job...

From £1,984

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HAM & PEARCE CONSTRUCTION LTD

HAM & PEARCE CONSTRUCTION LTD is a trusted extension builder serving customers in St Austell and the surrounding area. Contact us to today to get a...

From £2,288

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Refresh Renovations Cornwall

Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

From £2,304

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Refresh Renovations Cornwall

We are a part of the award-winning Refresh Renovation franchise network.Whether you want a simple bathroom remodel, or a large double storey extens...

From £2,264

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Probuild(cornwall) ltd

Probuild was set up as a platform to service clients with High End affordable quality Construction & project Management with solid advice & accurat...

From £2,304

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Paul Clarke Architectural Builders

Need an Extension Builder in St Austell? Paul Clarke Architectural Builders has been helping local clients (20 mile radius) with their extension bu...

From £2,040

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Aston Construction Project Management

Aston Construction Project Management is a trusted extension builder serving customers in St Austell and the surrounding area. Contact us to today ...

From £2,008

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Pendragon Builders Ltd

Need to find an Extension Builder near you for all your extension buildering work?

Pendragon Builders Ltd provides a local, trusted extensi...

RSJ cost in St Austell

Estimates for install an rsj near St Austell

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in St Austell it ranges from £1,984 (HAM & PEARCE CONSTRUCTION LTD based in PL23) to £2,304 (Refresh Renovations Cornwall based in PL25).

Comparing extension builders estimates for fitting an RSJ gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.

Get rates and quotes to install an RSJ in St Austell by posting a job with HaMuch and we will send it to extension builders in St Austell.


Get extension builder rates instantly

Get extension builder rates instantly (excluding VAT or callout charges)
Location in UKHourly RateDaily Rate
Install An RSJ near St Austell£38£245
Install An RSJ near Truro£31£206
Install An RSJ near Newquay£32£230
Install An RSJ near Falmouth£33£220
Install An RSJ near Camborne£28£196
Install An RSJ near Plymouth£30£230

Estimates for common extension builder jobs in St Austell;

Whether you’re looking to extend your kitchen with a side return extension or you want to convert your basement into a liveable space, read our cost guides to get an idea of how much each project costs before getting a more accurate quote from our database of reliable tradespeople.

More extensions & conversions cost guides...